Method for preparing bagasse dissolving pulps and producing rayo

Details Method for preparing bagasse dissolving pulps and producing rayo Method for preparing bagasse dissolving pulps and producing rayo

1978-10-25

1980-04-22

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 96, 162 86, D01C 100

Patent

active

041993993

ABSTRACT:
A dissolving pulp suitable for preparing rayon having a degree of polymerization of greater than about 800 can be produced using bagasse by a sodium hydroxide-sodium sulfite digestion at a ph of about 10.5 to 11.5 and preferably about 10.8 to 11.2 and a caustic-sulfite weight ratio of 1:1 to 1:3 followed by a bleaching sequence of DcEDH or DcEDD. This results in a high purity low silica content fiber which has undergone very little degradation.

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patent: 3738908 (1973-06-01), Villavicencio
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